Home Cosmetic Science Talk Formulating sodium stearate/stearic acid

  • sodium stearate/stearic acid

    Posted by joseg on February 10, 2014 at 7:32 pm

    I’ve read both are used together to form a paste-like texture in scrubs….has anybody worked with these in scrubs?

    I’ve only used sodium stearate for deodorant sticks around 8%, but in this case I want a gel that I can actually grab and use it to exfoliate the skin
    Any suggestion on a starting % I can try?
    chemicalmatt replied 9 years, 9 months ago 2 Members · 1 Reply
  • 1 Reply
  • chemicalmatt

    February 11, 2014 at 11:02 am

    Jose, that Na stearate gel you speak of only works with lower-chain alcohols and diols, e.g. SDA, propylene glycol. Once you start “pimping out” that system with other ingredients, the gel structure fails and you get an amorphous gunk. You can get a paste-like texture using mixed alkali stearates (K, Na,TEA) , some free stearic acid, and glyceryl stearate, Check out any “old school” shaving cream formulation, then modify from that starting point. You’ll have your pasty scrub in no time. Being soap, it will clean the face pretty well too! 

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